DAP202U Equivalent & Substitute Parts

Part Overview

The DAP202U is a general-purpose diode array manufactured by onsemi, configured as 1 pair common anode with 80 V reverse voltage rating and 100 mA average rectified current per diode. The device is housed in SC-70, SOT-323 surface mount package. The DAP202U is classified as obsolete product status, making identification of equivalent and substitute parts essential for ongoing design support and procurement continuity.

Key Parameters

Parameter	Value	Unit
Diode Configuration	1 Pair Common Anode	—
Voltage - DC Reverse (Vr) (Max)	80	V
Current - Average Rectified (Io) (per Diode)	100	mA (DC)
Voltage - Forward (Vf) (Max) @ If	1.2 @ 100 mA	V
Reverse Recovery Time (trr)	10	ns
Current - Reverse Leakage @ Vr	100 nA @ 70 V	nA
Operating Temperature - Junction (Max)	150	°C
Mounting Type	Surface Mount	—
Package / Case	SC-70, SOT-323	—
Technology	Standard	—

Substitute Part Grouping Explanation

Substitution of the DAP202U is determined by strict adherence to the following electrical and mechanical parameters:

Primary Substitution Criteria:

Diode configuration must be 1 pair common anode
Package must be SC-70, SOT-323 (surface mount)
Voltage - DC Reverse (Vr) must be greater than or equal to 80 V
Current - Average Rectified (Io) per diode must be greater than or equal to 100 mA
Voltage - Forward (Vf) must not exceed 1.2 V @ 100 mA
Operating temperature junction maximum must be 150°C or higher

Substitute Categories:

Parametric Equivalents: Parts meeting all primary substitution criteria with identical or superior electrical performance and active product status.

Direct Manufacturer Substitutes: Parts with different electrical ratings but same package and configuration, suitable for applications with relaxed current or voltage requirements.

Similar Alternatives: Parts with comparable performance across key parameters but with variations in reverse recovery time or leakage current specifications.

Parameter Comparison

Part Number	Manufacturer	Vr (Max) [V]	Io (per Diode) [mA]	Vf (Max) @ If [V]	trr [ns]	Ir @ Vr [nA]	Tj (Max) [°C]	Product Status	Package
DAP202U	onsemi	80	100	1.2 @ 100 mA	10	100 @ 70 V	150	Obsolete	SC-70, SOT-323
M1MA142WAT1G	onsemi	80	100	1.2 @ 100 mA	10	100 @ 75 V	150	Active	SC-70, SOT-323
SM1MA142WAT1G	onsemi	80	100	1.2 @ 100 mA	10	100 @ 75 V	150	Active	SC-70, SOT-323
SM1MA142WKT1G	onsemi	80	100	1.2 @ 100 mA	10	100 @ 75 V	150	Active	SC-70, SOT-323
DAP202U-TP	Micro Commercial Co	80	100	1.2 @ 100 mA	4	100 @ 70 V	150	Active	SC-70, SOT-323
BAW56WT1G	Motorola	70	200	1.25 @ 150 mA	6	2.5 @ 70 V	150	Active	SC-70, SOT-323
1PS300,115	Nexperia USA Inc.	80	170	1.2 @ 100 mA	4	500 nA @ 80 V	150	Active	SC-70, SOT-323
CMSD2836 TR PBFREE	Central Semiconductor Corp	75	200	1.2 @ 100 mA	4	100 @ 50 V	150	Active	SC-70, SOT-323

Engineering Selection Recommendations

Parametric Equivalents (Recommended Primary Substitutes):

M1MA142WAT1G, SM1MA142WAT1G, and SM1MA142WKT1G are parametric equivalents to DAP202U with identical electrical specifications (80 V, 100 mA, 1.2 V forward voltage, 10 ns recovery time). All three parts are manufactured by onsemi with active product status and RoHS3 compliance. SM1MA142WAT1G and SM1MA142WKT1G carry AEC-Q101 automotive qualification, suitable for applications requiring automotive-grade reliability. These parts provide direct functional replacement with superior product lifecycle support.

Direct Manufacturer Substitute:

DAP202U-TP, manufactured by Micro Commercial Co, meets all primary electrical criteria with identical voltage and current ratings. The part features improved reverse recovery time (4 ns versus 10 ns), providing enhanced switching performance. Active product status ensures continued availability. This part is suitable for direct substitution in applications where the DAP202U is specified.

Higher Current Capacity Alternatives:

BAW56WT1G (Motorola) and CMSD2836 TR PBFREE (Central Semiconductor Corp) provide increased current capacity (200 mA) with the same 80 V or 75 V reverse voltage rating. These parts are suitable for applications requiring higher current handling while maintaining the same package footprint. Both parts are active and RoHS3 compliant.

Enhanced Performance Alternative:

1PS300,115 (Nexperia USA Inc.) offers 80 V reverse voltage with 170 mA current capacity and superior reverse recovery time (4 ns). AEC-Q101 automotive qualification and active product status support demanding applications. This part provides performance enhancement over the original DAP202U specification.

Frequently Asked Questions (FAQ)

Q: Can BAW56WT1G replace DAP202U in all applications?

A: BAW56WT1G has a lower reverse voltage rating (70 V versus 80 V). It is suitable only for applications where the circuit operates below 70 V. The higher current capacity (200 mA) does not compensate for the reduced voltage margin. Verify circuit voltage requirements before substitution.

Q: What is the difference between M1MA142WAT1G and SM1MA142WAT1G?

A: Both parts have identical electrical specifications and are manufactured by onsemi. SM1MA142WAT1G carries AEC-Q101 automotive qualification and is designated as automotive grade. M1MA142WAT1G is the standard commercial version. Selection depends on application requirements for automotive certification.

Q: Is DAP202U-TP a direct replacement?

A: Yes. DAP202U-TP meets all electrical specifications of DAP202U with identical voltage, current, and forward voltage ratings. The improved reverse recovery time (4 ns) provides performance enhancement. Both parts use SC-70, SOT-323 package. Active product status ensures availability.

Q: Why should I choose 1PS300,115 over other substitutes?

A: 1PS300,115 combines 80 V reverse voltage (matching DAP202U) with higher current capacity (170 mA) and faster reverse recovery time (4 ns). AEC-Q101 automotive qualification supports demanding applications. Active product status and RoHS3 compliance ensure long-term supply continuity.

Q: Are all substitute parts RoHS compliant?

A: M1MA142WAT1G, SM1MA142WAT1G, SM1MA142WKT1G, 1PS300,115, and CMSD2836 TR PBFREE are RoHS3 compliant. DAP202U-TP and BAW56WT1G compliance status is not specified in provided data. Verify RoHS compliance requirements for your application before final selection.

Q: What is the significance of the SC-70, SOT-323 package?

A: SC-70 and SOT-323 are equivalent designations for the same surface mount package with three leads. All listed substitute parts use this identical package, ensuring mechanical and electrical compatibility without PCB redesign. Pin configuration remains consistent across all listed parts.

Q: Can I use CMSD2836 TR PBFREE if my circuit requires 80 V rating?

A: CMSD2836 TR PBFREE has a 75 V reverse voltage rating, which is 5 V below the DAP202U specification. Use this part only if your circuit operates below 75 V. For applications requiring full 80 V rating, select M1MA142WAT1G, SM1MA142WAT1G, SM1MA142WKT1G, 1PS300,115, or DAP202U-TP.

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